# Email Deliverability

> Free email deliverability checker. Test your SPF, DKIM, DMARC, BIMI, MX records and blacklist status instantly. Monitor your domains and get alerts when configurations break.

## About

Free email deliverability checker. Test your SPF, DKIM, DMARC, BIMI, MX records and blacklist status instantly. Monitor your domains and get alerts when configurations break.

## Features

- SPF record validation and lookup
- DKIM record checking
- DMARC policy analysis
- BIMI record verification
- MX record lookup
- Blacklist monitoring
- Shareable results
- Daily automated checks (monitoring tier)
- Email alerts when configurations change

## Pricing

- Free: Unlimited lookups, SPF/DKIM/DMARC/BIMI/MX checks, Blacklist status
- Free Monitoring: Up to 3 domains, Daily checks, Email alerts
- Pro ($39/month): Unlimited domains, Up to 5 co-recipients, Custom check timing, On-demand manual checks, Bulk CSV import

## Resource Categories

### Email Authentication

Guides for configuring and troubleshooting SPF, DKIM, DMARC, and other email authentication protocols.

- [SPF Fail, Softfail, and Hardfail Explained](https://deliverabilitychecker.com/resources/spf-fail-explained)
- [SPF Multiple Records: Why You Can Only Have One and How to Fix It](https://deliverabilitychecker.com/resources/spf-multiple-records)
- [SPF Softfail vs Hardfail: Understanding SPF Results and When to Use Each](https://deliverabilitychecker.com/resources/spf-softfail-vs-hardfail)
- [SPF Too Many DNS Lookups: How to Fix the 10 Lookup Limit](https://deliverabilitychecker.com/resources/spf-too-many-lookups)
- [SPF vs DKIM vs DMARC: What's the Difference?](https://deliverabilitychecker.com/resources/spf-vs-dkim-vs-dmarc)
- [DKIM Fail: Troubleshooting DKIM Authentication Errors](https://deliverabilitychecker.com/resources/dkim-fail)
- [DKIM Key Length: Choosing Between 1024-bit and 2048-bit Keys](https://deliverabilitychecker.com/resources/dkim-key-length)
- [DKIM Errors: Troubleshooting Permerror and Temperror](https://deliverabilitychecker.com/resources/dkim-errors-troubleshooting)
- [DMARC Alignment Explained: SPF and DKIM Alignment Requirements](https://deliverabilitychecker.com/resources/dmarc-alignment-explained)
- [DMARC p=none Explained: What It Means and When to Move Beyond It](https://deliverabilitychecker.com/resources/dmarc-p-none-explained)
- [DMARC Fail: Troubleshooting DMARC Authentication Failures](https://deliverabilitychecker.com/resources/dmarc-fail)
- [554 5.7.5 Permanent Error Evaluating DMARC Policy: How to Fix It](https://deliverabilitychecker.com/resources/554-dmarc-error)
- [Email Authentication Failed: How to Fix SPF, DKIM, and DMARC Failures](https://deliverabilitychecker.com/resources/email-authentication-failed)
- [Mailgun DMARC Setup: Configure DMARC for Mailgun Email](https://deliverabilitychecker.com/resources/mailgun-dmarc-setup)
- [SPF Include Mechanism Explained: How to Authorise Multiple Senders](https://deliverabilitychecker.com/resources/spf-include-mechanism-explained)
- [How to Set Up SPF, DKIM, and DMARC for Google Workspace](https://deliverabilitychecker.com/resources/email-deliverability-google-workspace)
- [10 Email Authentication Mistakes That Kill Deliverability](https://deliverabilitychecker.com/resources/email-authentication-mistakes)
- [Why Email Forwarding Breaks SPF (And How DKIM Saves You)](https://deliverabilitychecker.com/resources/email-forwarding-breaks-authentication)
- [DNS Propagation and Email: Why Changes Take Time and What Can Go Wrong](https://deliverabilitychecker.com/resources/dns-propagation-email)
- [TLS Email Encryption: What It Is and Why Email Providers Require It](https://deliverabilitychecker.com/resources/tls-email-encryption)
- [MTA-STS Explained: How to Enforce TLS Encryption for Your Email](https://deliverabilitychecker.com/resources/mta-sts-explained)
- [DKIM Key Rotation: Why, When, and How to Rotate Your DKIM Keys](https://deliverabilitychecker.com/resources/dkim-key-rotation)
- [How to Read DMARC Aggregate Reports (RUA): A Practical Guide](https://deliverabilitychecker.com/resources/dmarc-aggregate-reports-explained)
- [DMARC Forensic Reports (RUF): What They Are and Why Most Providers Don't Send Them](https://deliverabilitychecker.com/resources/dmarc-forensic-reports)
- [DMARC Quarantine/Reject Policy Not Enabled: What It Means and How to Fix It](https://deliverabilitychecker.com/resources/dmarc-quarantine-reject-not-enabled)
- [SPF Record Too Long? How to Flatten and Fix It](https://deliverabilitychecker.com/resources/spf-record-too-long)
- [PTR Records and Email: Why Reverse DNS Matters for Deliverability](https://deliverabilitychecker.com/resources/ptr-record-email)
- [Managing Email Deliverability Across Multiple ESPs](https://deliverabilitychecker.com/resources/multiple-esp-deliverability)

### Domain & Sender Reputation

Understand and improve your domain reputation, sender score, and inbox placement rates.

- [How to Check Your Email Domain Reputation](https://deliverabilitychecker.com/resources/email-domain-reputation-check)
- [Email Sender Reputation: What It Is and How to Check It](https://deliverabilitychecker.com/resources/email-sender-reputation)
- [Sender Score Explained: What It Is and How to Improve Yours](https://deliverabilitychecker.com/resources/sender-score-explained)
- [Email Spam Score Explained: What It Is and How to Improve It](https://deliverabilitychecker.com/resources/email-spam-score-explained)
- [Domain Spam Score: What It Is and How to Check It](https://deliverabilitychecker.com/resources/domain-spam-score)
- [Email Warmup: How to Warm Up a New Domain or IP](https://deliverabilitychecker.com/resources/email-warmup)
- [Google Postmaster Tools: Monitor Your Email Reputation and Deliverability](https://deliverabilitychecker.com/resources/postmaster-tools-guide)
- [Inbox Placement: What It Is and How to Test It](https://deliverabilitychecker.com/resources/inbox-placement)
- [What Is a Good Email Deliverability Rate?](https://deliverabilitychecker.com/resources/good-email-deliverability-rate)
- [How to Warm Up a New Email Domain: A Week-by-Week Plan](https://deliverabilitychecker.com/resources/email-warmup-new-domain)
- [Email Deliverability Metrics: Inbox Placement, Bounce Rate, and What to Actually Track](https://deliverabilitychecker.com/resources/email-deliverability-metrics)
- [IP Reputation Explained: Why Your Sending IP Matters for Email Deliverability](https://deliverabilitychecker.com/resources/ip-reputation-explained)
- [Dedicated IP vs Shared IP for Email: Which Is Right for You?](https://deliverabilitychecker.com/resources/dedicated-vs-shared-ip)
- [What Is Email Complaint Rate and How to Keep It Below 0.3%](https://deliverabilitychecker.com/resources/email-complaint-rate)
- [Email Feedback Loops (FBLs): How to Get Complaint Data from Providers](https://deliverabilitychecker.com/resources/feedback-loops-email)
- [How Email Engagement Affects Deliverability (And What to Do About It)](https://deliverabilitychecker.com/resources/email-engagement-deliverability)
- [Email Blacklist Check: How to Find and Remove Your Domain from Blacklists](https://deliverabilitychecker.com/resources/blacklist-removal-guide)

### Troubleshooting

Diagnose and fix email delivery problems including bounces, spam placement, and authentication failures.

- [Email Bounce Codes Explained: What 550, 421, and Other SMTP Errors Mean](https://deliverabilitychecker.com/resources/email-bounce-codes)
- [Email Bounce Rates: What They Mean and How to Reduce Them](https://deliverabilitychecker.com/resources/email-bounce-rates)
- [Email Deliverability Issues: Common Problems and How to Fix Them](https://deliverabilitychecker.com/resources/email-deliverability-issues)
- [Email Header Analysis: How to Read and Diagnose Delivery Issues](https://deliverabilitychecker.com/resources/email-header-analysis)
- [MX Record Troubleshooting: Fixing Mail Server Not Responding Errors](https://deliverabilitychecker.com/resources/mx-record-troubleshooting)
- [Undeliverable Email: What It Means and How to Fix It](https://deliverabilitychecker.com/resources/undeliverable-email)
- [Why Gmail Marks Emails as Spam (And How to Fix It)](https://deliverabilitychecker.com/resources/gmail-spam-issues)
- [Are My Emails Going to Spam? How to Tell and What to Do](https://deliverabilitychecker.com/resources/are-my-emails-going-to-spam)
- [Why Are My Emails Going to Spam? Common Causes and Fixes](https://deliverabilitychecker.com/resources/why-are-my-emails-going-to-spam)
- [How to Check Your Spam Folder in Gmail, Outlook, Yahoo, and Apple Mail](https://deliverabilitychecker.com/resources/how-to-check-spam-folder)
- [How to Tell If an Email Is Spam: A Quick Guide](https://deliverabilitychecker.com/resources/how-to-tell-if-an-email-is-spam)
- [How to Stop Emails Going to Junk in Outlook (And Other Providers)](https://deliverabilitychecker.com/resources/outlook-deliverability-issues)
- [Hard Bounce vs Soft Bounce: What They Mean and What to Do About Each](https://deliverabilitychecker.com/resources/email-bounce-types-explained)
- [Email Throttling Explained: Why Providers Limit Your Sending Speed](https://deliverabilitychecker.com/resources/email-throttling-explained)

### Best Practices

Proven strategies and platform-specific guides for maximizing email deliverability.

- [Email Deliverability Best Practices: A 2026 Checklist](https://deliverabilitychecker.com/resources/email-deliverability-best-practices)
- [How to Improve Email Deliverability: A Practical Guide](https://deliverabilitychecker.com/resources/how-to-improve-email-deliverability)
- [How to Test Email Deliverability: A Complete Checklist](https://deliverabilitychecker.com/resources/how-to-test-email-deliverability)
- [What is Email Deliverability? A Plain English Guide](https://deliverabilitychecker.com/resources/what-is-email-deliverability)
- [What Affects Email Deliverability? Key Factors Explained](https://deliverabilitychecker.com/resources/what-affects-email-deliverability)
- [Cold Email Deliverability: Best Practices for Outreach](https://deliverabilitychecker.com/resources/cold-email-deliverability)
- [Email Subject Line Testing: Best Practices for Deliverability](https://deliverabilitychecker.com/resources/email-subject-line-testing)
- [Email Spam Checker: How to Test If Your Emails Will Land in Spam](https://deliverabilitychecker.com/resources/email-spam-checker-guide)
- [How Email Spam Filters Work: A Complete Guide](https://deliverabilitychecker.com/resources/how-email-spam-filters-work)
- [HubSpot Email Deliverability: Best Practices and Troubleshooting](https://deliverabilitychecker.com/resources/hubspot-email-deliverability)
- [Email Deliverability in Salesforce: Complete Guide](https://deliverabilitychecker.com/resources/salesforce-email-deliverability)
- [Google and Yahoo Bulk Sender Requirements: The Complete Compliance Checklist](https://deliverabilitychecker.com/resources/google-yahoo-bulk-sender-rules)
- [Yahoo and AOL Sender Requirements: What's Different from Google's Rules](https://deliverabilitychecker.com/resources/yahoo-aol-sender-requirements)
- [Email Deliverability Audit Checklist: A 30-Minute Check That Catches Problems](https://deliverabilitychecker.com/resources/email-deliverability-audit-checklist)
- [Email Deliverability Monitoring: Why Set-and-Forget Authentication Is a Myth](https://deliverabilitychecker.com/resources/email-deliverability-monitoring-why)
- [How to Clean Your Email List Without Losing Good Subscribers](https://deliverabilitychecker.com/resources/email-list-hygiene-guide)
- [Email Content Spam Triggers: Words and Patterns That Get You Filtered](https://deliverabilitychecker.com/resources/email-content-spam-triggers)
- [Transactional vs Marketing Email: Why Separating Them Matters for Deliverability](https://deliverabilitychecker.com/resources/transactional-vs-marketing-email)
- [Subdomain Email Strategy: When and How to Use Subdomains for Email](https://deliverabilitychecker.com/resources/subdomain-email-strategy)
- [Email Deliverability After a Rebrand: How to Change Domains Without Losing Reputation](https://deliverabilitychecker.com/resources/email-deliverability-after-rebrand)
- [Email Deliverability During ESP Migration: How to Switch Without Losing Reputation](https://deliverabilitychecker.com/resources/email-deliverability-during-migration)
- [Email Deliverability During Holiday Season: A Sender's Survival Guide](https://deliverabilitychecker.com/resources/email-deliverability-holiday-season)
- [Email Deliverability for Nonprofits: Reaching Donors Without Getting Filtered](https://deliverabilitychecker.com/resources/email-deliverability-nonprofit)
- [Email Preheader Text: How It Affects Opens and Deliverability](https://deliverabilitychecker.com/resources/email-preheader-deliverability)
- [Email Deliverability in 2027: Trends and What's Changing](https://deliverabilitychecker.com/resources/email-deliverability-2027-trends)
- [B2B Email Deliverability: Getting Past Proofpoint, Mimecast, and Corporate Spam Filters](https://deliverabilitychecker.com/resources/email-deliverability-b2b)
- [SaaS Onboarding Email Deliverability: Ensuring Critical Emails Reach New Users](https://deliverabilitychecker.com/resources/email-deliverability-saas-onboarding)
- [Klaviyo Email Deliverability: How to Fix Emails Going to Spam](https://deliverabilitychecker.com/resources/klaviyo-email-deliverability)
- [Mailchimp Domain Authentication: How to Fix Deliverability Issues](https://deliverabilitychecker.com/resources/mailchimp-deliverability-issues)
- [SendGrid SPF, DKIM, and Deliverability: Setup and Troubleshooting Guide](https://deliverabilitychecker.com/resources/sendgrid-deliverability-guide)
- [Brevo (Sendinblue) SPF and DKIM Setup: A Deliverability Guide](https://deliverabilitychecker.com/resources/brevo-deliverability-guide)
- [ActiveCampaign Email Deliverability: Authentication Setup and Troubleshooting](https://deliverabilitychecker.com/resources/activecampaign-email-deliverability)
- [Amazon SES Deliverability: SPF, DKIM Setup and Bounce Handling Guide](https://deliverabilitychecker.com/resources/amazon-ses-deliverability)
- [Shopify Email Deliverability: Authentication Setup and Common Issues](https://deliverabilitychecker.com/resources/email-deliverability-shopify)
- [WordPress Email Deliverability: Why Emails Go to Spam and How to Fix It](https://deliverabilitychecker.com/resources/email-deliverability-wordpress)
- [Apple iCloud Mail Deliverability: What Senders Need to Know](https://deliverabilitychecker.com/resources/apple-icloud-mail-deliverability)
- [Zoho Mail Deliverability: SPF, DKIM, and DMARC Setup Guide](https://deliverabilitychecker.com/resources/email-deliverability-zoho)

### Brand Identity & Security

Protect your brand with BIMI, VMC certificates, and email fraud prevention.

- [What is BIMI? Complete Guide to Brand Indicators for Message Identification](https://deliverabilitychecker.com/resources/what-is-bimi)
- [BIMI Record Generator: How to Create and Publish Your BIMI Record](https://deliverabilitychecker.com/resources/bimi-record-generator)
- [BIMI VMC Certificate: What It Is and How to Get One](https://deliverabilitychecker.com/resources/bimi-vmc-certificate)
- [Is This Email a Scam? How to Identify Phishing and Spam Emails](https://deliverabilitychecker.com/resources/is-this-email-a-scam)
- [BIMI Setup Guide: How to Display Your Logo in Email Inboxes](https://deliverabilitychecker.com/resources/bimi-setup-guide)

## Links

- Homepage: https://deliverabilitychecker.com
- Features: https://deliverabilitychecker.com/features
- Pricing: https://deliverabilitychecker.com/pricing
- Resources: https://deliverabilitychecker.com/resources
- Email Authentication: https://deliverabilitychecker.com/resources/category/authentication
- Domain & Sender Reputation: https://deliverabilitychecker.com/resources/category/reputation
- Troubleshooting: https://deliverabilitychecker.com/resources/category/troubleshooting
- Best Practices: https://deliverabilitychecker.com/resources/category/best-practices
- Brand Identity & Security: https://deliverabilitychecker.com/resources/category/brand-security